the second pull up adds a whole new level of difficulty. also, i don't know exactly how, but i've injured my left knee. this slowed me down on both the transition from push up to squat, and in doing the squats.

i took a 1 min. rest between 5 sets of pullups 6,5,5,5,5. I think that i could do them with 40 secs, maybe 30 sec, rest between sets. this by it self should cut a couple of minutes off the time. i think that i can push a little harder and faster on the push ups and squats. anyway, i'll stick with level 5 for now and see what happens.